Radiator.



J. A. HINGER.

RADIATOR. APPLICATION FILED OCT. 25, 1916.

Patented July 17, 1917.

TED @TATESc T JOHN A. EINGER, QF DIECiftfil'T, MICHIGAN.

narrat on.

ne ates.

Specification of Letters Patent.

Patented dilly it, Twi l,

Application filed October 25, 191% Serial )l'o. 12?,5et'i.

which is also highly efiicient as a cooling agent. 7

In the drawings:

Figure 1 's a cross-section through a portion of a radiator constructed in accordance with my invention;

Fig. 2 is a section showing the several sections separated.

In the construction of radiators the heat from the liquid circulating medium is first transferred by conduction through the metallic walls of the conduit and is then dissipated by convection of air passing in contact with said walls or with radiating fins extended therefrom. It has been found that the amount of surface required for the transfer of the heat from the liquid to the metal is much less than that required for transfer of the heat from the metal to the air, and consequently the efficiency of the radiator is not decreased by;a considerable reduction in the amount of liquid-contacting surface, providing that there is suliicient air-contacting surface in good heat conducting relationthereto. I have therefore simplified and cheapened the construction of the radiator by reducing the number of Water tubes and by providingradiating fins so fashioned as to maintain good heat-conductin relation with said tubes'as well as to mechanically reinforce and brace the structure. Furthermore, I have devised. a construction which has the conventional apearance ofa cellular radiator of the type in which each cell is surrounded by a water passage. My improved construction is also one in which the elements of the structure may be readily formed from rolled sheetmetal and may be quickly assembled in relation to each other.

In detail, A A are similar sheets of metal which have been crimped or fashioned, preferably by passing through crimp ing rolls, into the zigzag form shown, These crimped sheets when placed adjacent each other will form parallel walls of a zigzag water tube, and the ends of the tubes may be readily connected. to the tanks or headers by lateral. extensions 13- of the parallel walls of adjacent tubes, which are seamed to each other as indicated at C. D is a fin strip crimped to form portions E that are parallel to the crimped walls of the members A and 1%., said portions being alternately turned in opposite directions with intermediate con-- necting portions F.

walls of air cells of hexagon al or other polyg onal' shape, which. cells are completed on one side by the water tubes, with portions of the fin lying parallel to and in contact with thewalls of said tubes. The cells are completed upon. the opposite side by an intermediate fin strip G of zigzag form similar to the members A and A, while a iin strip H bent to the reverse form of the strip D is arranged between the strip G and the next adjacent water tube. Thus in the completed structure there will be two rows of polygonal air cells intermediate each pair of water tubes, said cells being formed chiefly by the fin strips D, G and H, but completed by the walls of the water tubes and also having the fins of alternate cells in contact with the walls of the water tubes for the transfer of heat from one strip to the other. 1

In assembling the structure the several crimped strips may be readily placed in proper relation to each other and by then dipping the edge portions in solder they will be strongly united, with thejoints in the water tubes completely sealed. It will be noted that all of the bends in the sheet-metal are obtuse angles, which may be made with out overstressing the metal, thereby avoiding danger of leaks. To complete the struc' ture the tanks 1 and J are formed of sheetmetal and soldered or otherwise-secured, as indicated at ll;

What I claim as my invention is:

1. In a radiator section parallelly-arranged zigzag strips constituting a water tube, said strips respectively forming troughs at each side of the tube, a fin strip bent to have portions lying parallel and in contact with the walls of alternate troughs at one side of said water tube and portions V The construction is such that the clumped fin forms opposite side forming complementary wallsvof air cells with the intermediate troughs on the same side of said water tube.

2. In a radiator section parallelly-arranged zigzag strips constituting a Water tube, said strips respectively forming troughs at each side of the tube, a fin strip bent to have portions lying parallel to and ranged zigzag strips constituting walls of adjacent water tubes, a fin strip bent to have portions lying parallel to and in contact with alternate zigzags of one of said water tubes, with intermediate portions forming complementary walls of air cells with the intermediate zigzags of said water tube Wall, a reversely-bent fin strip having a s milar relation to the other water tube, and an intermediate zigzag strip having portions alternately in contact with and parallel to portions of said fin strips, and together therewith and said water tube walls completing two adjacent rows of air cells intermediate adjacent water tubes.

4. A radiator comprisin parallelly-arranged zigzag strips constituting walls of adjacent water tubes, a fin strip bent to have portions parallel to and in contact with alternate zigzags ofpne of said water tube walls and intermediate portions forming complementary Walls of air cells with the intermediate zigzags of said Water tube wall,

a reversely-bent fin strip having a similar relation to the adjacent water tube Wall, a zigzag strip parallel to the walls, of said water tubes arranged intermediate said fin strips and in contact with alternate portions thereof, and extensions of the walls of said water tubes seamed to each other and constituting a wall of a tank or header.

In testimony whereof I afiix my signature.

JOHN A. HINGER. 

